Iva
Shrubs or annual or perennial herbs, aromatic, glandular. Leaves sessile or shortly petiolate, opposite to alternate, simple or lobed. Capitula many, small, hemispherical, in terminal racemes or panicles, often nodding. Involucral bracts free or connate, few, 1-seriate; receptacle convex, with scales. Outer florets few, 1-seriate, female, tubular; corolla filiform or absent; style branches linear, with subulate papillose terminal appendages. Inner florets funtionally male, c. campanulate; corolla 5-lobed; anthers free, sagittate at base, with short apical appendage; style short, entire. Cypselas of outer florets obovoid to obconical, compressed, glabrous or hairy; pappus absent.
15 species, all from North America; 1 species naturalised in Australia.
Jeanes, J.A. (1999). Asteraceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 4, Cornaceae to Asteraceae, pp. 652–666. Inkata Press, Melbourne.
Spinning
